Experimental and modeling study on long-term alteration of compacted bentonite with alkaline groundwater

Yamaguchi, Tetsuji ; Sakamoto, Yoshifumi; Akai, Masanobu; Takazawa, Mayumi; Iida, Yoshihisa ; Tanaka, Tadao ; Nakayama, Shinichi

Dissolution rate of montmorillonite, diffusivity of hydroxide ion and permeability coefficient in compacted sand-bentonite mixtures were experimentally determined and formulated. A coupled mass-transport/chemical-reaction code was developed to predict variation in permeability of engineered bentonite barrier with alkaline fluid by using the formulae.

Language	:	English
Journal	:	Physics and Chemistry of the Earth
Volume	:	32
Number	:	1-7
Pages	:	p.298 - 310
Publication Year/Month	:	2007/00
Meeting title	:	2nd International Meeting on Clays in Natural and Engineered barriers for Radioactive Waste Confinement (TOURS 2005)
Held date	:	2005/03
Location (city)	:	Tours
Location (country)	:	France
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1016/j.pce.2005.10.003
DOI for research data	:
Keywords	:	Bentonite; Alteration; pH; Alkali; Dissolution; Diffusion; Permeability; Montmorillonite; Arrhenius Equation; Code
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:	How Long Does a Repository Confine Radionuclides?; Modeling of Long-Term Alteration of Bentonite Buffer Material[/]
Cooperating Institute	:	経済産業省原子力安全・保安院

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Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:72.99 Category:Geosciences, Multidisciplinary
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Registration No. : B20042258
JAEA Abstracts No. : 35000807
Paper Submission No. : 2300

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